How to Protect Against West Nile Virus

Cases of West Nile Virus have been reported in 47 states across the U.S., including 34 reported in California. Although we are seeing more cases than usual, health officials say it is not an epidemic. Still, they are urging people to take precautions against possible infections. Doctor Bruce Hensel reports for the NBC4 News at 5 p.m. on Aug. 22, 2012.